Wednesday, September 20, 2017, 08:00: 

-A new ion gauge was installed yesterday afternoon and the old one removed. The old IG was found to be contaminated (300 cpm) and as of 20/09/2017, it is double bagged and stashed underneath the evaporator for the time being. 

Completed under work permit: I2017-09-19-9

-The roughing pump was reconnected this morning without issue.

 Tuesday, November 07, 2017, 11:55

Interlocks limits updated/ changed to 100mTorr for both TGHT and TBHT by Ray

 Tuesday, November 07, 2017, 11:58

Noise levels were checked with monitor by Terry.

Max readings in lab reached ~83dB but sat between 70-78dB in most areas.

This is under limit for requirement to wear ear protection [85dB].

To reach limit - noise levels would need to increase drastically.

Conclusion: ear protection not required in lab.

Recommended if working in there for long periods of time for personal preference, but not a requirement.

 Wednesday, November 22, 2017, 11:05

Eye wash installed yesterday, simple attachment on sink spout.

Easy to use, simply twist attachment 180 degrees.

Water for tap can be turned on before or after twist.

Adjust pressure/ temperature accordingly.

Auto shut-off for eye-wash at ~38C [100F] - no accidental eye-burning when trying to wash eyes!

Oiled as per work permit:  I2019-03-26-2.

Tuesday, March 26, 2019, 08:53: Start RP1

Tuesday, March 26, 2019, 09:03: Holding at 0.303T on CG2. 

Tuesday, March 26, 2019, 09:10: Turned off RP1. Vent chamber slightly. Close VV1. Restarted RP1.

Open RV1.

Tuesday, March 26, 2019, 09:13: Vacuum stalls out at approx 0.300T.

Tuesday, March 26, 2019, 09:16: Shut off RP1. Contact Vacuum group.

 Checked as per work permit: I2019-03-26-5

Tuesday, March 26, 2019, 13:50: Filter checked. OK

Tuesday, March 26, 2019, 14:00: Tees checked. OK.

Tuesday, March 26, 2019, 14:05: Line / bellows. Fail

Tuesday, March 26, 2019, 14:11: New line / bellows. OK 

Tuesday, March 26, 2019, 14:19: TP1 on, IV1 opened. Vacuum @ 3.5e-05T and dropping.

Pumping down evap1. Dispose of the old line. Replacement successful. No contamination was found on the swipes.

Tuesday, March 26, 2019, 14:36: Vacuum @ 1.12e-05T and dropping. 

 One of the TBHT bolts  fell out of reach and may be sitting on the isolation valve or TP.

Remove TP as per WP:  I2019-11-05-9

Tuesday, November 05, 2019, 14:48: Completed. Found 2 TBHT bolts, a broken insulator, one small vented screw, and a piece of rubber.

Turbo pump mesh clear. Magnetic grabbing tool left in Evap 1 to potentially pickup /  grab materials before they fall down the hole if needed. The tip of the tool is contaminated.

Tuesday, November 05, 2019, 15:03: Evap 1 pumped down. TP1 started, IV1 opened. Ok. 

Friday, August 24, 2012, 16:40

Target is loaded with 245 discs of UCx (material from batch#02-13062012),

Tot length = 9.1 cm. 

The container is wrapped with 3 layers of Ta-heat shield, including the back block. 

A regular TaC-coated endcap is inserted on one end and the other is inserted with a D-cap

The chamber is currently begin pumped down.

 Instructions (while I'm on vacation)

1.  TGHT will need to heat up to ~175A to burn off the organics. 

      Parameter setup:  5.0e-5 good vac, 6.0-5 bad vac.  The auto-ramping rate is set to 0.1A/min.

2.  Once the organics have burnt off, ramp down the TGHT to 0A at 2A/min.

3.  Purge the glovebox with argon gas for at least 5 mins. 

4.  Vent the chamber with Ar gas.  Close the valve when it is completely vented.

5.  Remove the target.  Be careful the left end (view from the top) is open with the D-cap. 

6.  Clean the chamber with TCE and remove all the gunge.

7.  Install the target back

8.  Pump down the chamber to at least low 10e-6 Torr before begin the final carbonization process.

9.  Auto-ramp the TGHT current to 175A at 1A/min.

10.  Once the TGHT reach to 175A.  Auto-ramp TGHT to 520A at 0.1A/min.

11.  At 520A, keep heating the target for at least 4-5 hours.

12.  Auto ramp TGHT to 0A at 2A/min.

13.  Purge the glovebox with argon for at least 5 min

14.  Vent the chamber with argon gas.  Close the vavle when it is completely vented.

15.  Remove the target from the chamber and put in the "orange box" and transport to the Ar-glove box.

Done!

 Monday, August 27, 2012, 11:26

The chamber has been pumped down over the weekend.  Vac is currently at 3.45e-6 Torr. 

Auto-ramping TGHT to 55A at 0.25A/min.

 Monday, August 27, 2012, 16:24

TGHT reached to 55A and stayed for about 2 hours.  Vacuum went up to 1.9e-5 Torr and it's slowly coming down. 

Increase auto ramping to 175A at 0.1A/min.

Thursday, October 25, 2012, 14:50

Previous sintering BeO tests, pellets 1 to 4 were done in Evaporator#2.

3 BeO pellets were made.  Each weights about 1.3g (including org mass). 

A piece of Re foil (0.002" thick) is used as the under layer to protect the reaction between Be(g) and the Ta-boat.  (see attachment#1)

Another layer of Ta-foil is used as the heat-shield to wrap around the Ta-boat.

The chamber is currently being pumped down. 

TGHT will be ramped up to 600A (~1360C) at 0.2A/min.

The pressure, voltage and current will be closely monitored. 

If the Ta-boat survives, the TGHT will continue to ramp up to max 800A (~1580C).

 Friday, October 26, 2012, 11:15

Chamber has been pumped down over night. 

IG1 @ 8.93e-6 Torr. 

Auto-ramping parameter:

Good Vac @ 2.0e-5 Torr, Bad Vac @ 3.0e-5 Torr.

rate @ 0.2A/min. 

 Tuesday, October 30, 2012, 10:57

TGHT has reached to 370A. The organic binder has burnt off. 

The pressure came down to  6.6e-6 Torr, but it is slowly going up to 8.6e-6 Torr (something is outgassing... Dissociation of BeO --> Be(g) + O(g) ?).  BP @ 39mTorr.  (see attachment#2).

 Wednesday, October 31, 2012, 12:07

TGHT has reached to 600A/6.338V for just over 6 hours.  IG is slowly coming down fro 1.2e-5 Torr.  BP @ 38mTorr. (see attachment #3)

 Wednesday, October 31, 2012, 16:49

Vacuum is coming down to 8.49e-6Torr.  TGHT has stayed at 600A/6.24V for over 11hrs.  (see attachment #4)

Auto-cooling initiated at 1A/min. 

The chamber will be vented tomorrow and the material will be inspected.

 Thursday, November 01, 2012, 10:57

TGHT has reached to 0A.  Vacuum holding at 1.9e-6Torr.

Turning off P/S and pumps prior to venting chamber.

Thursday, August 01, 2013, 16:16

The target container was previously coated with TaC and sintered in Evap 2.

The target is loaded with 210 discs of UCx (material from batch # 04 - 05032013)

Total length = 7.2cm

The container is wrapped with 3 layers of Ta-heat shield, including the back block.

A regular TaC coated / sintered endcap is inserted on left, wrt the ionizer tube pointing out of the page. The right end is open with no cap.

The chamber is pumping down.

Instructions for conditioning the UCx target:

1. TGHT will need to heat up to ~ 175A to burn off the organics.

    Parameter setup: 5.0e-5 good vac, 6.0e-5 bad vac. The auto-ramping rate is set to 0.1A/min.

2. Once the organics have burnt off, ramp down the TGHT to 0A at 2A/min.

3. Purge the glovebox with argon gas.

4. Vent the chamber with Ar gas. Close the valve when it is completely vented.

5. Remove the target. Be careful the left end (view from the top) is open with the D-cap.

6. Clean the chamber with TCE and remove all the gunge.

7. Install the target back

8. Pump down the chamber to at least low 10e-6 Torr before begin the final carbonization process.

9. Auto-ramp the TGHT current to 175A at 1A/min.

10. Once the TGHT reach to 175A. Auto-ramp TGHT to 520A at 0.1A/min.

11. At 520A, keep heating the target for at least 4-5 hours.

12. Auto ramp TGHT to 0A at 2A/min.

13. Purge the glovebox with argon for at least 5 min.

14. Vent the chamber with argon gas. Close the valve when it is completely vented.

15. Remove the target from the chamber and put in the "orange james bond box" and transport to the Ar-glove box.

Done!

Thursday, September 19, 2013, 15:35

UO2/C green was prepared on Aug 17, 2013. The slurry was cast on a piece of glass coated with WD40.

The cast was let dry until Aug 19, 2013.

Initial UO2 powder used = 49.97g (Inventory R-00835A UO2 + bottle = 745.42 before use)

Graphite powder used = 10.12g

Green cast dried UO2/C + organic mass = 59.62g

The green was rolled up and wrapped in a piece of graphite sheet.

The Ta-target boat was wrapped with 3-Ta layers of heat shield and installed in Evap1 on Sept 19, 2013.

Chamber is currently being pumped down. IG1 @ 9.97e-12T.

Target will be ramped up to 520A at the rate of 0.1A/min

Vacuum limit stop at 5.0e-5 Torr, backing off at 6.0e-5 Torr

Thursday, January 23, 2014, 16:26 

 A new target boat was sprayed with TaC coating and let dry, the coating appeared slightly bubbly once dried [see attached photos].

The target boat was wrapped with 3-layers of Ta-heat shield.

The boat was installed in Evap#1, chamber is currently being pumped down overnight.

Laura Lambert wrote:

Thursday, January 23, 2014, 16:26   A new target boat was sprayed with TaC coating and let dry, the coating appeared slightly bubbly once dried [see attached photos]. The target boat was wrapped with 3-layers of Ta-heat shield. The boat was installed in Evap#1, chamber is currently being pumped down overnight.

 Friday, January 24, 2014, 14:42

Chamber was pumped down to 5.9e-6 Torr overnight.

TGHT was stepped up to 35A.

Waited 20min, vacuum consistently stable, auto-ramp initiated at 0.2A/min and max setpoint to 580A.

Good vacuum: 5e-5 Torr. Bad vacuum: 6e-5 Torr.

Tuesday, March 04, 2014, 15:43

Theses endcaps (4) were previously sinterred in Evap#2 but some surfaces were not fully sinterred. (See Evaporator2 E-log ID119: https://elog.triumf.ca/TIS/Evaporator_2/119)

The endcaps are inserted in a target boat wrapped with 3 heat-shields. 

Chamber is currently being pumped down. 

TGHT will be rampped up to 580A and heat for >4hrs.

John Wong wrote:

Tuesday, March 04, 2014, 15:43 Theses endcaps (4) were previously sinterred in Evap#2 but some surfaces were not fully sinterred. (See Evaporator2 E-log ID119: https://elog.triumf.ca/TIS/Evaporator_2/119) The endcaps are inserted in a target boat wrapped with 3 heat-shields.  Chamber is currently being pumped down.  TGHT will be rampped up to 580A and heat for >4hrs.

 Wednesday, March 05, 2014, 10:20

IGP1 = 9.2e-7 Torr.

TGHT was stepped up to 35A and stabilized after half an hour.

Auto-ramp initiated at 2.0A/min, max setpoint = 580A.

Vacuum started to climb too fast, auto-ramp aborted.

Will step up manually...

 Wednesday, March 05, 2014, 12:18

Slowly stepped up to 100A manually.

Vacuum stable.

Initiating auto-ramp at 1.0A/min

 Wednesday, March 05, 2014, 13:17

IGP1 = 9.8e-6 Torr.

Current = 200A

Vacuum stable.

Stepping ramping rate up to 2.0A/min.

 Wednesday, March 05, 2014, 16:12

IGP1 = 4.6e-5 Torr, TGHT = 548A

Stopped auto-ramp to allow vacuum to settle back down.

Waited ~10min

IGP1 = 3.6e-5 Torr

Re-initiating auto-ramp at 2.0/min

Tuesday, May 20, 2014, 16:01

Target boat contains one pellet of carbon mesh coated with UC2.  The sample was prepared in the Ar-glove box and the container is wrapped with 2 layer of Ta foil (it wasn't easy to do the wrapping).

Chamber is currently being pumped down.

TGHT will be heated up to 600A. 

Wednesday, May 21, 2014, 11:40

Chamber has been pumped down overnight, vac @ 6.7e-6 Torr.

Tuesday, May 27, 2014, 10:51 

TGHT was heated up to 600A and stayed for 12hrs before cooled down (see attachment).

EDX/SEM/XRD will be done soon...

More information about this sample structure can be found here: https://www.dropbox.com/sh/hirm808pgjwzg71/AAB1-kP399IbIa8AGdI-OMGua

 Friday, June 13, 2014, 14:57

Chamber was vented and cleaned for UCx target production. 

Will re-visit this later...

 Tuesday, September 23, 2014, 14:54

UO2/C green was prepared Sept 18, 2014. The slurry was cast on a piece of glass coated with WD40 on Sept 19, 2014.

The cast was let dry over the weekend and peeled off the glass nicely Sept 22, 2014.

Some materials were stuck on the WC jar wall and balls as always noted.

Initial UO2 powder used = 50.04g (Inventory R-00835A UO2 + bottle = 544.51g before use)

Graphite powder used = 9.98g

Green cast dried UO2/C + organic mass = 59.35g

The green was rolled up and wrapped in a piece of graphite sheet.

The Ta-target boat is wrapped with 3-layers of heat shield and installed in Evap1.

Chamber is currently being pumped down.

Target will be ramped up to 520A at the rate of 0.1A/min

Vacuum limit stop at 5.0e-5 Torr, backing off at 6.0e-5 Torr.

 Wednesday, September 24, 2014, 11:27

Chamber pumped down overnight.

IGP1 = 2.3e-6 Torr

Manually stepping TGHT up to 30A

 Wednesday, September 24, 2014, 14:00

Vacuum stable.

IGP1 = 1.3e-5 Torr.

Initiating auto-ramp.